如何写通用动作类BaseAction

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package pers.dov.bos.web.action.base;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

/**
 * 通用动作类BaseAction
 * @author Dovahkiin_
 *
 * @param <T>
 */
public class BaseAction<T> extends ActionSupport implements ModelDriven<T> {

	//模型对象
	protected T model;
	
	@Override
	public T getModel() {
		return model;
	}

	public BaseAction() {
		ParameterizedType genericSuperclass = (ParameterizedType) this.getClass().getGenericSuperclass();
		Type[] actualTypeArguments = genericSuperclass.getActualTypeArguments();
		Class<T> entityClass = (Class<T>) actualTypeArguments[0];
		try {
			model = entityClass.newInstance();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
	}
}